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Technical Note
BU4015B,BU4015BF,BU4021B,BU4021BF,
BU4094BC,BU4094BCF,BU4094BCFV,BU4538B,BU4028B
10/17
www.rohm.com
2009.06 - Rev.A
2009 ROHM Co., Ltd. All rights reserved.
●Electrical Characteristics Curves(BU4094BC)
○Switching characteristics are
stated on page 14.
0
50
100
150
200
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Ho
ld
Time
(CL
K
→
DA
TA
)[n
s]
0
100
200
300
400
500
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Pr
opagati
on
D
e
la
y
Ti
m
e
(
C
LK
→
Q'S)
[ns]
0
100
200
300
400
500
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Pr
opagati
on
D
e
la
y
Ti
m
e
(
C
LK
→
QN)
[ns]
0
100
200
300
400
500
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Pr
opagati
on
D
e
la
y
Ti
m
e
(
S
TR
OBE
→
QN)
[ns]
0
50
100
150
200
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Pr
opagati
on
D
e
la
y
Ti
m
e
(
O
utput
Enabl
e
→
QN)
[ns]
0
50
100
150
200
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Pr
opagati
on
D
e
la
y
Ti
m
e
(
O
utput
Enabl
e
→
QN)
[ns]
0
10
20
30
40
50
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Setup
Ti
m
e
(
D
ATA
→
CL
K
)[ns]
0
100
200
300
400
500
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
Pr
opagati
on
D
e
la
y
(
C
LK
→
Qs)
[ns]
Fig.26 Propagation delay
STROBE→QN
Fig.23 Propagation delay CLK→QS
Fig.27 Propagation delay tPHZ
Output Enable→QN
Fig.28 Propagation delay tPLZ
Output Enable→QN
Fig.29 Set up time tsu
DATA→CLK
Fig.24 Propagation delay
CLK→Q’S
Fig.30 Hold time tH
CLK→DATA
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
tPHL
0
10
20
30
40
50
0
5
10
15
20
Output Voltage [V]
Ou
tp
u
tS
o
u
rc
e
C
u
rr
e
n
t[
m
A
]
0
10
20
30
40
50
0
5
10
15
20
Output Voltage [V]
Output
Si
nk
C
u
rr
ent
[m
A]
Fig.22 Output sink
current-voltage
Fig.21 Output source
current-voltage
0
50
100
150
200
-50
-25
0
25
50
75
100
Ambient Temperature [℃]
M
ini
m
u
m
C
L
K
Pul
s
e
W
idth
[ns]
Fig.31 Minimum CLK pulse width
tW(CLK)
Fig.25 Propagation delay
CLK→QN
25[℃]
85[℃]
-40[℃]
25[℃]
85[℃]
-40[℃]
25[℃]
85[℃]
-40[℃]
25[℃]
85[℃]
-40[℃]
25[℃]
85[℃]
-40[℃]
25[℃]
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
tPLH
VDD=5[V]
VDD=16[V]
VDD=10[V]
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
tPLH
VDD=5[V]
VDD=16[V]
VDD=10[V]
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
tPLH
VDD=5[V]
VDD=16[V]
VDD=10[V]
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
tPLH
VDD=5[V]
VDD=16[V]
VDD=10[V]
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
tPLH
VDD=16[V]
VDD=10[V]
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
tPLH
tPHL
VDD=3[V]
tPHL
VDD=3[V]
tPHL
VDD=3[V]
tPHL
VDD=3[V]
tPHL
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
VDD=3[V]
VDD=5[V]
VDD=16[V]
VDD=10[V]
85[℃]
VDD=5[V]
[BU4094BC/F/FV]
VDD=10[V]
VDD=15[V]
VDD=5[V]
VDD=10[V]
VDD=15[V]
VDD=5[V]
Operating Temperature Range
[BU4094BC/F/FV]